EUVD-2026-62709
GHSA-3fcr-249g-2cg3
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
Network-reachable but requires low-privilege authentication and high-complexity conditions; no integrity impact despite write primitive, consistent with vendor assessment.
Primary rating from Vendor (ibm).
CVSS VectorNVD
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:L
Lifecycle Timeline
2DescriptionNVD
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to obtain sensitive information and cause a denial of service due to an out-of-bounds write.
AnalysisAI
Out-of-bounds write in IBM AIX 7.2/7.3 and PowerVM VIOS 4.1 enables remote authenticated attackers to trigger memory corruption leading to partial information disclosure and denial of service. The flaw (CWE-787) requires low-privilege credentials and high attack complexity, placing it at CVSS 4.2 Medium - a realistic but bounded threat profile. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The CVSS vector (PR:L) confirms that low-privilege authenticated network access is required - unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.2 (Medium) reflects a constrained but real risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | A remote attacker with low-privilege credentials on an IBM AIX or PowerVM VIOS environment sends a specially crafted network request designed to trigger a specific protocol state or condition (AC:H) in a vulnerable component, causing an out-of-bounds write that corrupts adjacent memory, potentially leaking sensitive in-process data and crashing the service. The high attack complexity means the attacker must precisely control timing, sequence, or system state to reliably trigger the write - reducing this from a trivial spray-and-pray scenario to one requiring targeted effort. … |
| Remediation | IBM has released a patch addressing this vulnerability; the authoritative fix guidance is available at https://www.ibm.com/support/pages/node/7283858, which will specify the exact APAR numbers, Technology Levels, and interim fixes required for AIX 7.2, AIX 7.3, and PowerVM VIOS 4.1. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Memory Corruption
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External POC / Exploit Code
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